Re-pressing brick machine



(No ModeL) 4Sheets-Sheet 1. J. A.FREY & J. THOMPSON. RII-PRESSING BRICKMACHINE. No. 472,618. PatentedApr. 12., 1892.

HMM vv (No Model.)

4 Sheets- Sheet 2.

J. A. PREYZSU J. THOMPSON. RE-PRBSSING BRICK MACHINE.

N. 472,618. Patented Apr. 12, 1892.

(No Model.) 4 Sheets-Sheet 3.

J. A. FREY'& J. THOMPSON. RB-PREssNG BRICK MACHINE.

No. 472,618. Patented Apr. 12, 1892.

@mw s (No Modell.) 4 Sheets-Sheet 4.

J. A. PRBY & J. THOMPSON..

RB-PssING BRICK MAGHINE.

No. 472,618. Patented Apr. 12, 1892.

WIZWESSES JJVVENOQY UNITED STATES PATENT OFFICE.

JAMES ARTHUR FREY AND JOHN THOMPSON, OF BUCYRUS, OHIO, ASSIGNOR TO THEFREY-SCHEOKLER COMPANY, OF SAME PLACE.

RE-PRESSING BRICK-MACHINE.

SPECIFICATION forming part of Letters Patent No. 472,618, dated April12, 1892.

Application filed November 29, 1890- Serial No. 373,020. (No model.)

To all whom it may concern:

Be it known that we, JAMES ARTHUR FEEY and JOHN THOMPSON, citizens ofthe United States of America, residing at Bucyrus, in

the county of Crawford and State of Ohio, have jointlyinvented certainnew and useful Improvements in Machines for Re-Pressing Bricks, of whichthe following is a specification.

Io Our invention relates to machines for repressing bricks, whereby themolded forms made by the brick-machine are subjected to a secondcompression to expell the moisture, increase their solidity, and improvetheir ap- I 5 pearance, and the object is to improve the existingcondition of the art.

We have properly illustrated our invention in the accompanying drawings,wherein- Figure 1 is a perspective of the machine.

zo Fig. 2 is an end view of the upper part of the machine, showing there-pressframe and the cross-head with the upper portion of theplunger-head. Fig. 3 is a side View of the upper portion of the machine.Fig. 4 is a .vertical 2 5 section of the machine, taken through theplungers. Fig. 5 is a detail of the brick-feeding frames or boxes. Fig..6 is a transverse section taken through the bed of the machine, showingthe frame'of the 11e-pressing boxes,

3o the supports thereof, and the feed-box.

A designates a bed-plate on which the supporting-frame and standards ofthe machine are arranged and secured. This bed-plate may be fastened inplace by any proper means,

3 5 it being represented in the drawings as bolted to afloor-foundation. On the bed-plate are secured the box-supports 1,formed with an angular box-seat 2, on lwhich a chamber 3 of thejournal-boxes 4 is arranged,the boxes be- 4o ing fastened to thesupports by bolts,` as shown in Fig. 1. The side supports 5 6 of theframe are formed with recesses to take the bearingboxes. In the sidesupports are vertical ways 7 to take the ends of the bottom plunger andguide it in its reciprocations.

B designates the driving-pulley, mounted on a shaft 8, carrying pinions10 on opposite sides of the machine, one onlyof said pinions beingshown, which mesh with large gear- 5o'wl1eels 11 12 on a shaft 13,journaled in the boxes 4. On the shaft 13 is a cam 14, which lifts thebottom plunger 15. The bottom plunger consists of a strong piece ofmetal having its ends arranged in the ways 7 and is formed with aplunger-head 16, fitting the repressing box or chamber, as shown in Fig.

4 of the drawings. In the middle of the under face of the plunger isjournaled a roller 16X, running with its face resting on the surface ofthe cam 14. On the side supports 6o are secured angular plates 17,having inwardly-directed horizontal flanges 1S, forming supports onwhich the re-pressing boxes 19 are secured. On the angular plates 17 aresecured or formed guide-pieces 2O 21, in which 65 the flanges on thereciprocating feed-box and remover engage. The feed-box 22 consists of astrong angular frame having generally two brick chambers or boxes andprovided at one end with vertical posts or studs 23, between 7o which ishung a swinging plate or door 24, serving as means whereby when theforms'are lnoved over the compression-box in the brickreceivers thereceivers may move in the return direction bythe opening of the doorsand the form be left in position for compression by the descending upperplunger. It sometimes happens that a form will stick in projectingposition above the compression-box, and in such position it wouldseriously interfere with the 8o practical and certain operation of themachine; but by having the doors on the boxes they permit theunobstructed return of thereceivers over such obstruction and leave theblock or form in place for the action of the descend- 85 ing plunger. Itwill also be perceived that the door hangs vertical, resting in the openend of the feed-box,which on its return after having again been suppliedwith forms or blocks, the blocks moved upward and out of 9o thecompression-box will be abutted by the outer face of the door and pushedforward onto the carrying-belt b. It will also be perceived that by theintervention of the smooth metal surface between the molds or blocks inthe receiver and the ejected compressed blocks the regularity, smoothfinish, and angularity of the blocks are insured. This feedbox, with ahinged and yielding end piece, constitutes an important element in thepresent roo invention, and we have so made claim thereto, as will beparticularly perceived by reference to that part of the specification.

To the sides of the feed-boxes are attached means for pulling the box ineither direction. In this instance we have secured vertical arms 25 onthe side of the feed-box with their lower portions extending below thebottom, and to these arms the ends of cables which reciprocate thefeed-box are connected. In the side pieces of the frame are securedstandards 25X 2G, arranged with a space between theln, constituting ways27, in which the cross-head carrying the upper plunger is guided.

C designates a strong cross-head disposed in the ways of the standardsand having its ends extended and formed with journals carrying illeboxes of pitmen 2S, the lower ends of which are secured in a box on awrist-pin 29 on the gear-wheels ll and l2. The pitmanrods are providedwith a fixed collar 30 at their upper portions, which form supports forthe cross-head in its upper movements, and the endsof the pitman-rodsare extended above their box connections, as at 3l, and provided withnuts and springs 33, which serve as cushions to take the jar from theplunger and make the pressure more gradual and yielding.

On the front and rear of the frame are mounted shafts 3l 35, carryingsheaves 3G 37, having` one end of the cables 3S 89 connected thereto,the other ends of the cable being adjustably connected to the arms ofthe feedboxes, substantially` as shown inthe drawin On the end of theshaft 3 is a small sheave 40, to which one end of a cable 4l isattached, the other end of the cable being carried over an idler-sheave42, journaled at the top of the standards and the end fastened to a stud43 on the erosshead. At some point on the cross-head is fastened one endof another cablett, carried down and under an idler-sheave 45 on theframe and thence to a sheave 46 on the shaft 35, to which the end isanchored. It will nowbe perceived that the reciprocations of thecross-head through the agencies of the sheaves affect the reeiprocationsof the brickfeed boxes. On the cross-head are the upper plungers orcompression-plates 47, which tit in the feed-boxes and apply pressure tothe blocks from that direction. XVhile we have illustrated a mechanismadapted to compress two forms at one time, it is apparent that a similarconstruction and mode of operation may be applied to a machine intendedto compress a single form or brick. At the rear of the machine aremounted rollers c, carrying a belt or apron d,which receives therepressed forms as they are pushed thereon by the feedboxes, and fromwhence the forms are removed to the depository. The table may be of anysuitable construction.

The mode of operation is as follows: Rotary motion being imparted to thedrivingshaft, the two pinions S and 9 impart motion in an oppositedirection and of a proportionate slower rate to the two spur-wheels 1011 on shaft 13, carrying cam 14 and pitman 28, which reciproeallyactuate cross-head C and move the upper plungers accurately in thepressbox. Cam 14 moves the bottom plungerframe l5 up in the press-box.The cam 141s formed on its upper surface so as to shove the lowerplunger and press-plate up even with the press-box and table and to holdit there long enough until the brick are deposited thereon by thesliding arrangement, the action of which is explained morefullyhereinafter. As soon as the bricks are fairly on the lowerpress-plates the cam allows them to recede and take the bricks alonginto the press-boxes, when the upper plunger comes down onto it, soactuated at the proper moment by the pitmau and cross-head. XVhile thepressure is to be put on from above, the cam li from below commences toact upward again against the brick, so that a very heavy pressure isobtained. A slight wavy formation at the ascending point of the camallows a succession of slightly -intermitting pressures to be given,which helps to expel the air from the clay and improve the quality ofthe work. After the maximum of the pressure has been obtained, which isat the point where the two pitmen 2S stand vertical, the revolutions ofthe wheels l0 draw the crosshead, with the compression-plate 47 thereon,out of the press-box and make it ascend far enough in height so thattime and space enough are obtained for the feeding apparatus to actbefore it again descends. Cam lt in the meantime revolves synchronouslywith its inclined face under the anti-friction roller, and lifting orshoving the press-plate or plunger upward and the bricks with it evenwith the top of the platform upon which the feeding device slides. Thisexplains the whole process of receiving, compressing, and ejecting thebricks from the press-box ready for the feeding device, whose action wenow will describe. The top of the platform or table being even with thatof the press-boxes, it enables the feed-boxes to be pulled back andforth the proper distance to receive the blocks of clay at one end, thentravel forward and in its progression drop the brick into thecompression-boxes or mold-boxes, and at the same timepush the re-pressedbrick forward by means of the hanging doors or plates 24, which hangdown vertically against the frame of the feed-boxes until they reach thetraveling belt, which carries them away from the machine and may be ofany length; rlhe movement-is obtained by the cables or chains, as shownin the drawings. One cable is attached to the cross-l1ead and runs overthe idler on top, then onto a sheave on shaft, and under the platform,which has two sheaves in such position that the two cables fastenedthereon and on the two arms of the sliding frame will pull thefeed-boxes outward. It will be seen that The other cable on the ICO IIO

t shorter movements can be obtained to suit the length of theblocks.lVhen the thickness of the bricks or blocks is not essential, volutesprings may be used on top of pitrnan 2S, which admit, by the adjlisting-nuts on top, of receiving any desired pressure. Where a uniformand positive thickness of the brick is desired, the springs are'broughtdown solid and ventholes are put in the press-plates to let thesuperfluous clay escape, should blocks of too large size be introduced.Steam is admitted to heat the press boxes and plates Where the clay isof such a nature as to stick While being repressed, heat acting verybeneficially at times on such clays. We have illustrated thesesteam-pipes in Fig. l of the drawings..

Having thus described our invent-ion, what We claim is l. In a re-pressbrick-machine, the combination, with a top reciprocating plunger-bar, atable having a compression-chamber therein,

and a reciprocating feed-box on the table, of shafts at the respectiveends of the table, carrying sheaves, cables connecting the sheaves andthe feed-box, sheaves on the ends ot' said shafts, and cables connectingsaid latter sheaves to the plunger-bar, substantially as and for thepurpose specified.

2. In a re-press brick-machine, the combination, with a table formedWith a brick-compression chamber and a vertically-reciprocating barcarrying the top plunger, 0f a reciprocating feed-box and sheaves andcables connecting the feed-box and plungerbar,where by the feed-box isreciprocated by the reciprocation's of the plunger-bar, substantially as

